<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			.box{
				width: 900px;
				height: 300px;
				border: 1px solid #333;
				
				display: flex;
				/*flex-wrap: wrap;   /*nowrap 不换行；wrap 换行*/
				justify-content: flex-start;
				/*justify-content: flex-end;*/
				/*justify-content: center;*/
				justify-content: space-around;		/*平分剩余空间*/
				justify-content: space-between;
			}
			.item{
				width: 150px;
				height: 50px;
				background: orangered;
				border: 1px solid #fff;
			}
		</style>
	</head>
	<body>
		<div class="box">
			<div class="item">001</div>
			<div class="item">002</div>
			<div class="item">003</div>
			<div class="item">003</div>
			
		</div>
	</body>
</html>
